/ggnewscale

Multiple Fill, Color and Other Scales in `ggplot2`

Primary LanguageTeXGNU General Public License v3.0GPL-3.0

ggnewscale

R build status Codecov test coverage DOI CRAN status

ggnewscale tries to make it painless to use multiple scales in ggplot2. Although originally intended to use with colour and fill, it should work with any aes, such as shape, linetype and the rest.

ggnewscale: spend 400% more time tweaking your ggplot!

For another way of defining multiple scales, you can also try relayer.

How to install

You can install ggnewscale from CRAN with:

install.packages("ggnewscale")

Or the development version with:

# install.packages("devtools")
devtools::install_github("eliocamp/ggnewscale")

How to cite

If you use ggnewscale in a publication, I’ll be grateful if you cited it. To get the suggested citation for this (and any other R package) you can use:

citation("ggnewscale")
#> To cite ggnewscale in publications use:
#> 
#>   Campitelli E (????). _ggnewscale: Multiple Fill and Colour Scales in
#>   'ggplot2'_. doi:10.5281/zenodo.2543762
#>   <https://doi.org/10.5281/zenodo.2543762>, R package version 0.5.0.
#> 
#> A BibTeX entry for LaTeX users is
#> 
#>   @Manual{R-ggnewscale,
#>     title = {ggnewscale: Multiple Fill and Colour Scales in 'ggplot2'},
#>     author = {Elio Campitelli},
#>     note = {R package version 0.5.0},
#>     doi = {10.5281/zenodo.2543762},
#>   }

If you use knitr, you can automate this with

knitr::write_bib(c("ggnewscale"), "packages.bib")

And then add citations with @R-ggnewscale.

Click to see a list of some publications that have cited ggnewscale. Thanks!

[1] Application of Rapid Diagnostics and Next-Generation Amplicon Sequencing to Address Product Quality in the Food Industry - ProQuest. https://www.proquest.com/openview/3238c502f2c2d6c8bef42493c35d6a47/1?pq-origsite=gscholar&cbl=18750&diss=y. Jun. 28, 2023. (Visited on 06/28/2023).

[2] Integrated Analysis of Hub Genes and miRNA- Transcription Factor-Hub Gene Interaction Network in Necrotizing Enterocolitis. https://www.researchsquare.com. Apr. 2023. DOI: 10.21203/rs.3.rs-2756663/v1. (Visited on 04/12/2023).

[3] Nutrigonometry II: Experimental Strategies to Maximize Nutritional Information in Multidimensional Performance Landscapes - Morimoto - 2022 - Ecology and Evolution - Wiley Online Library. https://onlinelibrary.wiley.com/doi/10.1002/ece3.9174. Aug. 08, 2022. (Visited on 08/08/2022).

[4] Rifaximin Prophylaxis Causes Resistance to the Last-Resort Antibiotic Daptomycin medRxiv. https://www.medrxiv.org/content/10.1101/2023.03.01.23286614v1. Mar. 10, 2023. (Visited on 03/10/2023).

[5] Study on the Mechanism of Lung Ischemia-Reperfusion Injury Based on Bioinformatics. https://www.researchsquare.com. Jul. 2023. DOI: 10.21203/rs.3.rs-3088383/v1. (Visited on 07/19/2023).

[6] Using Stochastic Point Pattern Analysis to Track Regional Orientations of Magmatism During the Transition to Cenozoic Extension and Rio Grande Rifting, Southern Rocky Mountains - Rosera - 2024 - Tectonics - Wiley Online Library. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023TC007902. Feb. 12, 2024. (Visited on 02/12/2024).

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Usage

The main function is new_scale() and its aliases new_scale_color() and new_scale_fill(). When added to a plot, every geom added after them will use a different scale.

As an example, let’s overlay some measurements over a contour map of topography using the beloved volcano.

library(ggplot2)
library(ggnewscale)
# Equivalent to melt(volcano)
topography <- expand.grid(x = 1:nrow(volcano),
                          y = 1:ncol(volcano))
topography$z <- c(volcano)

# point measurements of something at a few locations
set.seed(42)
measurements <- data.frame(x = runif(30, 1, 80),
                           y = runif(30, 1, 60),
                           thing = rnorm(30))

ggplot(mapping = aes(x, y)) +
  geom_contour(data = topography, aes(z = z, color = stat(level))) +
  # Color scale for topography
  scale_color_viridis_c(option = "D") +
  # geoms below will use another color scale
  new_scale_color() +
  geom_point(data = measurements, size = 3, aes(color = thing)) +
  # Color scale applied to geoms added after new_scale_color()
  scale_color_viridis_c(option = "A")
#> Warning: `stat(level)` was deprecated in ggplot2 3.4.0.
#> ℹ Please use `after_stat(level)` instead.
#> This warning is displayed once every 8 hours.
#> Call `lifecycle::last_lifecycle_warnings()` to see where this warning was
#> generated.

If you want to create new scales for other aes, you can call new_scale with the name of the aes. For example, use

new_scale("linetype")

to add multiple linetype scales.